/*
package JUC;

public class ThreadLocalTest {
    private static final ThreadLocal<Long> TIME_THREADLOCAL=new ThreadLocal<Long>();
    public static final void star(){
        TIME_THREADLOCAL.set(System.currentTimeMillis());
    }
    public static final long end(){
        return System.currentTimeMillis().TIME_THREADLOCAL.get();
    }
}
*/
